20 oz (591 ml). 4.5 in x 3.5 in. 11.4 cm x 8.9 cm. Since 1958. Non-porous stoneware will not absorb food odors, flavors or stains. Oven, microwave, and dishwasher safe. Limited One Year Warranty: For full safety, usage and warranty information, call in USA 1-800-999-3436 or visit www.corningware.com. Microwave and oven safe. Stoneware. Microwave and oven safe. No stovetop. No broiler. Made in China. Stoneware mugs made in China. Plastic covers made in USA.